<!-- header -->
<ion-header>
  <ion-navbar>
    <ion-title>ChatList</ion-title>
  </ion-navbar>
</ion-header>
<!-- content -->
<ion-content>
  <ion-list>
    <button ion-item *ngFor="let item of chatList;" (click)="onItemClicked(item)">{{item.title}}</button>
  </ion-list>
</ion-content>
